refactor: remove custom `utc_now` in favor of `chrono::Utc:now` feature (#23888)

This PR removes the use of the custom `utc_now` function in favor of the
`chrono` implementation. It resolves #22864.

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

3 files changed, 2 insertions, 19 deletions

diff --git a/ext/kv/Cargo.toml b/ext/kv/Cargo.toml
index 12a0e2c90..7349d5841 100644
--- a/ext/kv/Cargo.toml
+++ b/ext/kv/Cargo.toml
@@ -17,7 +17,7 @@ path = "lib.rs"
 anyhow.workspace = true
 async-trait.workspace = true
 base64.workspace = true
-chrono.workspace = true
+chrono = { workspace = true, features = ["now"] }
 deno_core.workspace = true
 deno_fetch.workspace = true
 deno_node.workspace = true
diff --git a/ext/kv/lib.rs b/ext/kv/lib.rs
index 72e1cab30..285614389 100644
--- a/ext/kv/lib.rs
+++ b/ext/kv/lib.rs
@@ -4,7 +4,6 @@ pub mod dynamic;
 mod interface;
 pub mod remote;
 pub mod sqlite;
-mod time;
 
 use std::borrow::Cow;
 use std::cell::RefCell;
@@ -56,7 +55,6 @@ use denokv_proto::WatchStream;
 use log::debug;
 use serde::Deserialize;
 use serde::Serialize;
-use time::utc_now;
 
 pub use crate::interface::*;
 
@@ -772,7 +770,7 @@ async fn op_kv_atomic_write<DBH>(
 where
   DBH: DatabaseHandler + 'static,
 {
-  let current_timestamp = utc_now();
+  let current_timestamp = chrono::Utc::now();
   let db = {
     let state = state.borrow();
     let resource =
diff --git a/ext/kv/time.rs b/ext/kv/time.rs
deleted file mode 100644
index 3a5565332..000000000
--- a/ext/kv/time.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-
-/// Identical to chrono::Utc::now() but without the system "clock"
-/// feature flag.
-///
-/// The "clock" feature flag pulls in the "iana-time-zone" crate
-/// which links to macOS's "CoreFoundation" framework which increases
-/// startup time for the CLI.
-pub fn utc_now() -> chrono::DateTime<chrono::Utc> {
-  let now = std::time::SystemTime::now()
-    .duration_since(std::time::UNIX_EPOCH)
-    .expect("system time before Unix epoch");
-  chrono::DateTime::from_timestamp(now.as_secs() as i64, now.subsec_nanos())
-    .unwrap()
-}